CN203190364U - 一种双通道空气对流灯具散热结构及使用其的par灯 - Google Patents
一种双通道空气对流灯具散热结构及使用其的par灯 Download PDFInfo
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Abstract
本实用新型公开一种双通道空气对流灯具散热结构及使用其的PAR灯,所述双通道空气对流灯具散热结构是由灯杯外侧的散热鳍片形成第一空气流通通道,由灯杯与反光罩形成第二空气流通通道,这种双通道空气对流散热设计有效地提高了灯具整体的散热能力。同时公开了一种采用该种双通道空气对流散热结构的PAR灯,采用高中心光强的COBLED光源,整灯出光角度小,光线柔和,无眩光,质量轻,安全可靠,散热性能好,可替代传统的高功率小角度钨丝发光PAR灯,并且使用寿命是传统钨丝发光PAR灯的十倍多。
Description
技术领域
本实用新型涉及照明灯具领域,尤其涉及一种双通道空气对流灯具散热结构及使用其的PAR灯。
背景技术
LED的出现和发展引起了一场席卷全球的固态照明革命,现已进入功能性照明领域,并逐步进入普通照明领域。LED的光效远远高于传统的照明与显示光源,显示出较好的节能效果,如在景观照明上可节能70%,液晶电视背光源可节能50%,道路照明可节能50%以上。2015年如果我国半导体照明产品能够进入30%的普通照明市场,将可每年节电约1000亿度,为单位GDP能耗降低贡献一个百分点,减少CO2、SO2、粉尘排放1.5亿吨。因此LED产业作为绿色产业倍受各国高度重视。
随着人们对节能环保概念的深入理解,随着半导体照明的发展,LED光源以其高效、节能和环保的特性被用于各种照明,作为传统照明光源的替代品已经越来越多的出现在各种灯具上。因LED自身的特点,采用LED作为光源的灯具都需要有散热系统的设计,当前的灯具的散热系统普遍存在不是散热能力不足,就是灯具重量过重,体积过大的特点。难以满足人们对散热性能好,质量轻,外观美观的灯具需要。
传统的PAR灯因采用钨丝发光,光效低,功率高,现在多采用以LED为光源的新型PAR灯。这样不仅节能,而且寿命长,但是通常不是光学性能指标达不到传统高功率小角度钨丝PAR灯的要求,就是质量重,散热性能不佳,很难有可完全替代传统高功率小角度钨丝PAR灯。
发明内容
了解决上述问题,本实用新型提供一种双通道空气对流灯具散热结构,以及使用其的LED PAR灯,该LED PAR灯角度小,中心光强可与传统高功率小角度钨丝发光PAR灯相当,质量轻,散热可靠。
本实用新型是通过以下技术方案实现的:
一种双通道空气对流灯具散热结构,包括灯杯、反光杯和面盖;
所述灯杯具有底面和侧壁;
所述灯杯侧壁外侧带有竖直排布的鳍片,相邻鳍片间留有空隙,形成第一空气流通通道;
所述灯杯的顶部设有杯沿,杯沿与杯体间形成均匀分布的杯沿孔隙,所述杯沿孔隙与第一空气流通通道一一对应;
所述反光杯位于灯杯内部;其侧壁与灯杯侧壁间形成第二空气流通通道,与该流通通道相连的灯杯底面处设有底部通气孔;
所述面盖固定在灯杯顶部,其与第二空气流通通道相连接的位置设置有面盖通气孔。
一种使用双通道空气对流灯具散热结构的 PAR灯,包括前述的双通道空气对流灯具散热结构、螺丝底座、底座外壳、电源、光源和透光板;
所述底座外壳的两端分别与灯杯底部和螺丝底座相连,所述底座外壳尾端设有底座外壳通气孔;所述电源位于底座外壳内;所述透光板位于反光杯和面盖之间;所述光源是LED光源,位于灯杯底部内侧。
一种优选方案为所述LED光源为COB LED光源;LED芯片排列方式是从中心到边缘、由密到疏排列。
所述灯杯是由铝材外包导热绝缘材料制成;所述透光板具有菲涅尔光学设计。
所述电源通过卡位的方式安装在底座外壳内,电源周围是绝缘的。
本实用新型与现有技术相比具有以下优点:
本实用新型使用双通道空气对流灯具散热结构的 PAR灯采用的是COB LED光源,该COB LED光源通过对光源的中心区域芯片的密集排列,可有效提高COB LED光源的中心光强,从而提高了灯具的中心光强。
整灯通过反光杯和LED光源的配合,使本PAR灯产生很小的出光角度;光通过反光杯的反射由透光板导出,整个PAR灯光色均匀,无眩光。
灯杯侧壁外侧采用自上而下的鳍片散热设计,增加了散热面积的同时,提高了灯具周围垂直方向的空气对流,有效强化了灯具的散热能力。
另外,在灯具的面盖、灯杯底部和底座外壳尾端上都设有通气孔,在灯具正常工作的时候,气流会通过杯沿孔隙、面盖通气孔进入灯杯侧壁外侧的鳍片形成的第一空气流通通道和灯杯侧壁内侧的第二空气流通通道,气流通过第一空气流通通道有效地提升了鳍片的散热能力;在灯杯侧壁内侧,气流沿着灯杯内侧经由灯杯底部通气孔进入底座外壳,最后从底座外壳尾端的通气孔出来,形成了灯杯内部的空气对流通道,在导出光源热量的同时,也把安装在底座外壳内的电源产生的热量有效的导出,这种双通道空气对流散热设计有效地提高了灯具整体的散热能力。
当前LED灯具多采用铝材作为灯具材质,在利用了这种双通道空气对流灯具散热结构之后,灯具的散热能力可有效提升,这样就可以采用较铝材导热率低的其他高导热绝缘材料作为灯具材质,不仅质量轻,造型多样,对于丰富LED灯具的外观和造型提供了更多的选择,而且较铝材更环保,设计的灯具更安全。
本实用新型中采用了双通道空气对流散热结构的LED PAR灯,整灯出光角度小,光线柔和,无眩光,质量轻,安全可靠,散热性能好,可替代传统的高功率小角度钨丝发光PAR灯,并且使用寿命是传统钨丝发光PAR灯的十倍多。
附图说明
图1是一种双通道空气对流灯具散热结构示意图;
图2是一种双通道空气对流灯具散热结构剖面示意图;
图3是一种使用双通道空气对流灯具散热结构的 PAR灯结构示意图;
图4是一种COB LED光源芯片的排布示意图;
其中:1-面盖,2-透光板,3-反光杯,4-光源,5-灯杯,6-电源,7-底座外壳,8-螺丝底座,9-面盖通气孔,10-底部通气孔,11-底座外壳通气孔,12-鳍片,13-螺丝孔,14-杯沿孔隙。
具体实施方式
如图3所示,一种使用双通道空气对流灯具散热结构的 PAR灯,其包括双通道空气对流灯具散热结构、螺丝底座8、底座外壳7、电源6、光4源和透光板2。
如图1、2所示,其中双通道空气对流灯具散热结构包括灯杯5、反光杯3和面盖1;灯杯5由铝材外包导热绝缘材料制成,具有底面和侧壁;鳍片12依次竖直排布在灯杯5侧壁外侧,相邻鳍片12间留有空隙,形成第一空气流通通道;灯杯5的顶部设有杯沿,杯沿与杯体间形成均匀分布的杯沿孔隙14,杯沿孔隙14与第一空气流通通道一一对应;反光杯3位于灯杯5内部;其侧壁与灯杯5侧壁间形成第二空气流通通道,与该流通通道相连的灯杯5底面处设有底部通气孔10;面盖1固定在灯杯5顶部,其与第二空气流通通道相连接的位置设置有面盖通气孔9。
在图2中,我们假设灯具工作时是悬挂的,这样可以看到,气流通过面盖通气孔9进入,分为两路,一路沿着第一空气流通通道向上流通,加速了灯杯5外部的空气散热;一路进入了灯具灯杯5内部,气流沿着第二空气流通通道向上流通,再通过底部通气孔10流出,加速了灯杯5内部的热量导出,灯杯5内外两条散热通道的设计有效地提高了灯具的散热能力。
底座外壳7的两端分别与灯杯5底部和螺丝底座8相连,且底座外壳7尾端设有底座外壳通气孔11;电源6位于底座外壳7内,通过卡位的方式固定,电源6周围是绝缘的;透光板2是经菲涅尔透镜光学设计处理的,位于反光杯3和面盖1之间;光源4位于灯杯5底部内侧,采用COB LED光源,LED芯片排列方式是从中心到边缘、由密到疏排列,如附图4所示。
Claims (6)
1.一种双通道空气对流灯具散热结构,包括灯杯、反光杯和面盖;其特征是:
所述灯杯具有底面和侧壁;
所述灯杯侧壁外侧带有竖直排布的鳍片,相邻鳍片间留有空隙,形成第一空气流通通道;
所述灯杯的顶部设有杯沿,杯沿与杯体间形成均匀分布的杯沿孔隙,所述杯沿孔隙与第一空气流通通道一一对应;
所述反光杯位于灯杯内部;其侧壁与灯杯侧壁间形成第二空气流通通道,与该流通通道相连的灯杯底面处设有底部通气孔;
所述面盖固定在灯杯顶部,其与第二空气流通通道相连接的位置设置有面盖通气孔。
2.使用双通道空气对流灯具散热结构的 PAR灯,其特征是:包括双通道空气对流灯具散热结构、螺丝底座、底座外壳、电源、光源和透光板;
所述底座外壳的两端分别与灯杯底部和螺丝底座相连,所述底座外壳尾端设有底座外壳通气孔;所述电源位于底座外壳内;所述透光板位于反光杯和面盖之间;所述光源是LED光源,位于灯杯底部内侧。
3.根据权利要求2所述的PAR灯,其特征是:所述LED光源为COB LED光源;LED芯片排列方式是从中心到边缘、由密到疏排列。
4.根据权利要求2或3所述的PAR灯,其特征是:所述灯杯是由铝材外包导热绝缘材料制成。
5.根据权利要求4所述的PAR灯,其特征是:所述透光板具有菲涅尔光学设计。
6.根据权利要求5所述的PAR灯,其特征是:所述电源通过卡位的方式安装在底座外壳内,电源周围是绝缘的。
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